20606480

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1439}}^1$

素因数の和:1631

約数の個数: 40

約数和(自身を含む): 48211200

約数和(自身を除く): 27604720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1432, 1439, 1790, 2864, 2878, 3580, 5756, 7160, 7195, 11512, 14320, 14390, 23024, 28780, 57560, 115120, 257581, 515162, 1030324, 1287905, 2060648, 2575810, 4121296, 5151620, 10303240, 20606480]

約数ペア:

[(1, 20606480), (2, 10303240), (4, 5151620), (5, 4121296), (8, 2575810), (10, 2060648), (16, 1287905), (20, 1030324), (40, 515162), (80, 257581), (179, 115120), (358, 57560), (716, 28780), (895, 23024), (1432, 14390), (1439, 14320), (1790, 11512), (2864, 7195), (2878, 7160), (3580, 5756)]